@eluvio/elv-utils-js/lib/context.js

Utilities for the Eluvio Content Fabric

const kindOf = require('kind-of')
const R = require('@eluvio/ramda-fork')

const callContext = params => {
  if(kindOf(params.argList) !== 'array') {
    throw Error('argList must be an Array')
  }
  if(!R.all(x => kindOf(x) === 'string', params.argList)) {
    throw Error('all items in argList array must be strings')
  }

  if((Object.keys(params).includes('cwd')) && kindOf(params.cwd) !== 'string') {
    throw Error('cwd must be a string')
  }

  const context = {
    argList: R.clone(params.argList),
    args: {},
    concerns: {},
    cwd: params.cwd || process.cwd(),
    env: Object.assign(R.clone(process.env), (params.env || {})),
    mode: 'call'
  }

  if(Object.keys(params).includes('env')) {
    if(kindOf(params.env) !== 'object') {
      throw Error('env must be an object')
    }
    context.env = R.mergeRight(context.env, params.env)
  }

  return context
}

const cmdLineContext = () => {
  return {
    argList: R.clone(process.argv),
    args: {},
    concerns: {},
    cwd: process.cwd(),
    env: R.clone(process.env),
    mode: 'cmd'
  }
}

const emptyContext = () => {
  return {
    argList: [],
    args: {},
    concerns: {},
    cwd: '',
    env: {},
    mode: ''
  }
}

module.exports = {
  callContext,
  cmdLineContext,
  emptyContext
}